Ear cups feature an ultra-low profile design with ultra-thin ear cups for a secure fit; these ear cups block out unwanted noise while allowing you to clearly hear what's going on around you Earcups use two high-gain microphones to amplify safe sound for clear all-round hearing; boost low-end frequencies for accurate, natural sound Rugged Design - These sleeves feature a rugged design with a rubber coating to help prevent damage to the electronics inside; the housing is made of sound-isolating composite; the headband is a padded metal wire frame Easy-to-use controls - These earcups feature a slightly recessed volume control knob on the outside - strikes the perfect balance between providing easy-to-use controls and preventing accidental volume adjustments; the battery door can also be opened from the outside